Dissertations / Theses on the topic 'Zinc levels in sputum'
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Waite, Paul. "Deep levels in zinc selenide." Thesis, Durham University, 1986. http://etheses.dur.ac.uk/6773/.
Full textOtsuka, Kojiro. "Sputum YKL-40 Levels and Pathophysiology of Asthma and Chronic Obstructive Pulmonary Disease." Kyoto University, 2012. http://hdl.handle.net/2433/152498.
Full textIskandar, Monica. "Elevated levels of dietary zinc intake modulate the expression of CCS and intestinal zinc trafficking proteins." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84041.
Full textHebert, E. Gerald. "Arsenic, Cadmium, Copper, and Zinc Levels in Crayfish from Southwest Louisiana and Atchafalaya Basin." ScholarWorks@UNO, 2015. https://scholarworks.uno.edu/td/2082.
Full textTin, Ekun. "Changes in Iron, Calcium, Magnesium, Copper and Zinc Levels in Different Tissues of Riboflavin Deficient Rats." Kyoto University, 1997. http://hdl.handle.net/2433/202193.
Full textWijesundara, Chandra. "Response of corn to high levels of CuSO₄ and ZnSO₄ applications." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45959.
Full textMaster of Science
Winarko, Clementinus. "Response of corn to high levels of CuSO₄ and ZnSO₄ applications." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45656.
Full textCopper and Zn deficiencies of crop plants occur in various areas throughout the world. The sulfate forms of Cu and Zn are generally used to correct these micronutrient deficiencies. In agricultural practices, Cu and Zn are applied to soils not only as a fertilizer but also as manures, pesticides and waste materials such as sewage sludge. High levels of Cu and Zn application to agricultural soils are considered to pose a potential hazard to plants and animals. Research findings have not established Cu and Zn levels that either injure plants or increase Cu and Zn concentrations in edible plant portions to undesirably high levels. Published data on the fate of applied Cu and Zn indicate that there is little, if any, downward movement of these micronutrients in soils and that, with time, applied Cu and Zn revert to plant unavailable forms in soils.
Master of Science
Read, Elizabeth Stevens. "Investigation of the effects of copper source, copper and zinc levels, and dietary protein source on CU bioavailability in rainbow trout." Thesis, Montana State University, 2012. http://etd.lib.montana.edu/etd/2012/read/ReadE0512.pdf.
Full textConway, Daniel Elridge. "CYP1A1 and CYP1B1 expression and free zinc levels in endothelial cells are differentially regulated by pro-atherogenic versus anti-atherogenic shear stress." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33832.
Full textMonasterios, Clevys Josefina. "Determination of copper and zinc at trace levels in human hair using a direct sample insertion technique for inductively coupled plasma atomic emission spectrometry." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63251.
Full textMills, Kayla. "Effect of Cyclic Heat Stress and Supplemented Inorganic and Organic Zinc Source Levels on Grow-Finish Pig Growth Performance, Estimated Body Composition, Intestinal Morphology and Gene Expression." Thesis, Purdue University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10808446.
Full textHeat stress is a physiologic state where an animal can no longer properly regulate it’s body temperature to prevent hyperthermia. It has been well documented that heat stress can negatively impact feed intake, growth performance, carcass characteristics, gut morphology and integrity in swine. Finishing swine are particularly sensitive to heat stress which costs the U.S. swine industry millions of dollars annually. There are several ways heat challenges can be mitigated to reduce the negative impacts of heat stress during warmer temperatures, one of which being nutrition. Knowing that heat stress alters intestinal barrier function and morphology, we took a holistic approach in assessing how supplementing finishing pigs with an inorganic zinc source and an organic/inorganic zinc blend during cyclic heat stress could potentially improve gut function and thus growth performance and carcass characteristics.
Six hundred cross-bred pigs were housed under thermoneutral (TN) or cycling heat (HS) conditions simulating summer heat with acute 3-day heat waves for a 70-day study. Thermoneutral conditions were 18.9–16.7 °C throughout the study. Heat stress pigs were housed at the same temperature as TN from d 0–18, then increasing temperatures d 18–21 (28 °C/24 °C for 12h:12h, 50.0% humidity) followed by 30 °C/26.7 °C (12h:12h, 52.4% humidity) d 24–70 except during acute heat (32–33 °C/29–30 °C, 12h:12h, 51.5% humidity) on d 21–24, 42–45, and 63–66. Treatments were arranged in a 2×6 factorial with main effects of environment (HS vs. TN) and six dietary zinc supplementations, from either an inorganic (ZnO) or organic (Availa®Zn) source. Dietary Zn treatments were: 1) 50 mg/kg ZnO; 2) 130 mg/kg ZnO: 3) 50 mg/kg organic Zn; 4) 50 mg/kg ZnO + 40 mg/kg organic Zn; 5) 50 mg/kg ZnO + 60 mg/kg organic Zn; and 6) 50 mg/kg ZnO + 80 mg/kg organic Zn. Pigs (5/pen) were blocked by initial BW (72.2 kg) and randomly allotted to 1 of 12 temperature and diet treatment combinations across 10 replicates. There were 5 rooms per thermal environment, each containing 2 blocks of dietary treatments. Body weight and feed intake were determined at the beginning/end of each acute and chronic heat event. All pigs were ultrasonically scanned at the 10th rib for loin eye area (LEA) and backfat (BF) to calculate percent lean on d 63. Pigs were marketed on d 64 (TN) and d 71 (HS). Growth performance, carcass characteristics, and gut morphology were analyzed by the MIXED procedure and gene expression was anazlyzed with the GLM procedure in SAS 9.4. At d 63, HS pigs were lighter (124.11 vs. 128.34 kg; P < 0.001), had lower overall ADG (826 vs. 901 g/d; P < 0.001), ADFI (2.740 vs. 3.032 kg/d; P < .001), but tended to have greater G:F (0.301 vs. 0.297; P = 0.1204). A diet by environment interaction was noted for overall ADG ( P = 0.0039) and ADFI (P < 0.001). The interaction is an order of magnitude in the reduction of ADG as a result of diet 5 having only a 3.9% reduction in ADG whereas diet 6 had 14.4% reduction in ADG under HS conditions. Pigs under HS had less BF at the 10th rib (16.9 vs. 18.0 mm; P < 0.001) and a smaller LEA (53.5 vs. 55.2 cm2; P < 0.001), but a greater calculated percent lean (54.6 vs. 54.1%; P = 0.039). Overall, HS pigs used 6.13 L more water per day than TN pigs (P = 0.0007) with the biggest difference in water utilization during the d 42–45 acute heat wave (6.17 vs. 15.6 L/pig/day; P < 0.0001). Cyclic heat stress simulating summer conditions reduced growth performance by approximately 8.3%, resulting in 4 kg lighter pigs after 63d.
To explore how zinc supplementation impacted gut morphology and jejunal gene expression during cyclical HS, one pig/pen (n = 80) from diets 1, 2, 3, and 6 from each environment was harvested on d 65 at the Purdue University meats lab. Intestinal tissue was collected and analyzed for gene expression (heat shock proteins (HSP) 27, 70, and 90, occludin, and mucin-2) and morphology (n = 80). Ileal villi were shorter in HS pigs (P = 0.020) and jejunal HSP70 (P < 0.080) also tended to increase with HS. A 3-way interaction (Environment x Zn Source x Zn Level) was observed for villus height (P < 0.02) and HSP27 (P = 0.05) expression in the jejunum. The villus height 3-way interaction was primarily caused by the 50 mg/kg inorganic Zn treatment increasing villus height under HS and all other treatments decreasing villus height under HS. (Abstract shortened by ProQuest.)
Cao, Kanyu. "Crystal-field splitting of Er 3+in ZnO and experimental observations." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177608455.
Full textMendonça, Maitê Vidal. "Efeitos da associação de diferentes fontes de cobre e zinco na dieta de leitões desmamados." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/10/10135/tde-13112018-114626/.
Full textInitially the present study aimed to evaluate the effects of different sources of copper and zinc in the diet of weaned piglets. However, it was necessary to use the same sources and only change the inclusion levels of these minerals, which justifies the title (which couldnt be replaced later). Newly weaned piglets show reduced nutrients digestibility, due to the lack of maturity of the digestive system to the solid diet, leading to a reduction in nutrient absorption and consequently, diarrhea and performance reduction. One of the alternatives used after weaning, especially with the reduction of the use of antibiotics as growth promoters, is the use of microminerals, mainly zinc (Zn) and copper (Cu). Among the sources, zinc oxide (ZnO) and copper sulfate (CuSO4) are commonly used at pharmacological levels, 3000 mg/kg and 250 mg/kg, respectively, due to low cost and to improve performance, fecal consistency and maintenance of intestinal integrity. It is possible that piglets supplemented with the association of CuSO4 and ZnO at reduced levels in the diet show performance, diarrhea frequency and intestinal morphology similar to piglets supplemented with higher levels and that there is no interference on Cu hepatic absorption and Zn concentration in tibia. Thus, the present study evaluated the association between CuSO4 and ZnO at reduced levels on performance, intestinal morphology, frequency of days with diarrhea and concentration on the liver and tibia in piglets during the nursery phase. A total of 80 piglets were weaned at 21 days of age divided into 2 treatments according to the following phases: Pre-starter (21 to 35 days): T1, 3000 mg/kg ZnO + CuSO4; T2, 2500 mg/kg ZnO + CuSO4; Starter 1 (35 to 49 days): T1, 2500 mg/kg ZnO + CuSO4; T2, CuSO4; and in the Starter 2 (49 to 63 days): T1 and T2, 100 mg/kg ZnO + CuSO4, with inclusion of 180 mg/kg of CuSO4 in all phases. The experimental design was in randomized blocks, with room and weight considered as blocks. The diarrhea frequency was transformed by the sine function and the characteristics were submitted to analysis of variance using SAS software (v. 9.3). The level of significance was 5%. Piglets receiving lower levels of ZnO had greater diarrhea frequency from 35 to 49 days of age (P < 0.05), however performance, intestinal morphology and Cu concentration in the liver were similar between treatments. Infers that this result was obtained by Zn, Cu and palliative care, such as oral serum supply and therapeutic antibiotic therapy in animals with liquid feces. It is conclude that the piglets that received reduced ZnO inclusion, levels below 3000 mg/kg, associated with 180 mg/kg of CuSO4 showed higher frequency of days with diarrhea from 35 to 49 days, with no impairment in performance and intestinal morphology, enabling possible the reduction of costs and environmental pollution.
Jayaram, Lata. "Airway inflammation, diagnosis, perception of asthma, and sputum zinc levels in a community cohort." Thesis, 2010. http://hdl.handle.net/2440/63531.
Full textThesis (Ph.D.) -- University of Adelaide, School of Medicine, 2010
Lin, Yu-Cheng, and 林祐誠. "Effect of Dietary Crude Fiber and Zinc Levels on the Growth and." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/14224073679513584606.
Full textNadar, Anand. "The interrelationship of dietary cholesterol, copper and zinc on plasma lipids and tissue copper and zinc levels in the rat." Thesis, 1992. http://hdl.handle.net/10413/5876.
Full textAnand, Nadar. "The interrelationship of dietary cholesterol, copper and zinc on plasma lipids and tissue copper and zinc levels in the rat." Thesis, 1992. http://hdl.handle.net/10413/7860.
Full textCastro, Ana Carolina Fernandes Vieira de. "Sub-toxic zinc oxide nanoparticles modulate PSD-95 and shank 3 protein levels." Master's thesis, 2019. http://hdl.handle.net/10773/28433.
Full textO efeito do zinco nos sistemas neuronais está a aumentar o seu interesse na pesquisa científica devido a um possível papel como modulador da atividade sináptica. Além disso, pesquisas recentes apontam para o potencial terapêutico de nanopartículas de óxido de zinco (ZnO NPs) em células neuronais. Essas nanopartículas são excelentes transportadoras de fármacos para o cérebro porque, além de terem características positivas para a proteção da homeostase celular, são pequenas, permitindo que elas ultrapassem a barreira hematoencefálica e interajam diretamente dentro dessas células. Nesse sentido, a presente tese explorou o efeito de concentrações sub-tóxicas de ZnO NPs na viabilidade celular e produção de ROS em células SH-SY5Y, bem como seu impacto nos níveis de expressão das proteínas PSD-95, SHANK 3 e β-actina. Os resultados mostraram aumentos na expressão das proteínas PSD-95 e SHANK 3, sem variações na expressão da β-actina após a exposição das células neuronais a concentrações sub-tóxicas e em tempos de exposição reduzidos aos ZnO NPs. Esforços futuros devem ser implementados para investigar como esse aumento pode reduzir o comprometimento cerebral associado a doenças neurodegenerativas. No entanto, os resultados aqui apresentados identificaram claramente alguns dos alvos moleculares sinápticos das ZnO NPs e que vale a pena explorar o seu potencial terapêutico.
Mestrado em Biomedicina Molecular
Su, Yu-Ting, and 蘇于婷. "Serum copper, zinc and vitamin D levels in type I diabetes mellitus patients." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/08330280875287630681.
Full text高雄醫學大學
醫學檢驗生物技術學研究所
100
英文摘要 A diabetes epidemic has emerged during the 20th century. The prevalence of diabetes for all age groups was estimated to be 2.8% in 2000,and this number will increase to 4.4% by 2030. Alterations in trace elements have been reported in a number of diseases. Patients with diabetes mellitus are inclined to result in the imbalance of trace elements and elevated oxidative stress markers. Trace elements are well known to play an important role in the maintenance of health. Zinc is essential for normal insulin production, and plays a central role in cellular protection against apoptosis and oxidative stress. Copper is an essential trace element for enzyme systems catalase, superoxide dismutase and cytochrome oxidase and its deficiency can lead to a variety of nutritional and vascular disorders. Vitamin D through its active form 1, 25-dihydroxyviyamin D, is essential for intestinal calcium absorption and plays a central role in maintaining calcium homeostasis and skeletal integrity. Vitamin D deficiency may be also related to cancer, cardiovascular disease, diabetes and multiple sclerosis in human. In this study, trace elements and vitamin D in body fluids of type 1 diabetic patients were evaluated. We further explored the possible relationship between trace elements, vitamin D and parameters (duration of the disease, HbA1c, gender, BMI value) of diabetic patients. Part I: The aim of this study was to explore the serum copper and zinc levels in type 1 diabetic patients by flame atomic absorption spectrometry. Zinc level was significantly lower than controls, but they failed to reach statistical significance. Copper levels was significantly higher in type 1 diabetic patients when compared with the control groups (p<0.001). No significant differences were observed while analysimg the relationship between five parameters and trace elements. In summarys, there are no significant correlation between trace elements (Zn﹐Cu) levels and duration of diabetes, HbA1c, gender, BMI values in type 1 diabetic patients. Part II: There were controversial results of serum vitamin D in type 1 diabetic patients. There were still very rare previous literatures concerning serum vitamin D level in diabetic patients by using liquid chromatography tandem mass spectrometry. We found that our type 1 diabetic patients had significantly higher serum 25(OH)D and 25(OH)D3 levels than that of control groups. There were no significant difference of serum 25(OH)D2 levels in type 1 diabetes and control groups. Our study revealed that 41.5% of type 1 diabetes male patients were 25(OH)D insufficient and 7.3% deficient. In type 1 diabetes female patients, 13.3% were 25(OH)D insufficient and 36.7% were 25(OH)D deficient. There were no correlation between 25(OH)D levels and HbA1c in type 1 diabetes patients. There were also no correlation between 25(OH)D levels and duration of the disease in type 1 diabetes patients. There were no correlation between serum copper, zinc levels and serum 25(OH)D levels in type 1 patients, respectively.
Magnusson, Karin. "Risk for postpartum depression in association with zinc, magnesium and calcium levels at delivery." Thesis, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-216507.
Full textChen, Yu-Hsuan, and 陳俞璇. "A study of blood lead, cadmium, selenium, zinc, copper, and magnesium levels in fertile and infertile men." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/38120783871378968622.
Full text臺北醫學大學
公共衛生學系
92
Recently, infertility issue is more important to be discussed. In the past 50 years, the trend of the semen quality in globe males is descending. The situation is caused by possible reason including age, environmental factors and lifestyles. In developed countries, environmental factors, lifestyles, smoke habits, alcohol consumption and stress have suggested to play a role in human subfertility. The environmental toxicant which adverse effects on male reproductive function have been extensively studied. As a matter of fact, many metals have been investigated in vivo or vitro, such as lead, zinc, cadmium, magnesium and copper. However, the metals effect upon the male semen qualities is still controversial. The aim of the study is to explore the association between the distribution of metals and male fertility. The study is perormed by case-control study. The subjects are selected from a local medicine university in Taipei. Subfertile men are diagnosed in the division of urology in the hospital. Volunteers are searched from the division of Obstetrics and Gynecology whose wife are pregnancy at the study period. All subjects’ socioeconomic state, habits, job, and history of medicine are collected by questionnaire. The semen samples are processed and examined to determine the sperm count and motility using a Markler Counting Chambers and Computer-aided sperm analysis. The metals concentrations in blood and semen are detected by Atomic Absorption Spectrometry. The results show that the concentration of follicle-stimulating hormone , luteinizing hormone , and prolactin in the fertile males are lower than the subfertile males, but the concentration of testosterone is reverse. The concentrations of blood lead, selenium, magnesium and semen count, motility, normal morphology percentage among the fertile males and the subfertile males are statistically different. But no correlation could be demonostrated between the concentrations of metals in semen and the male fertility. The multiple logistic regression model displays that amount of smoking habit and lead are hazards for semen quality, but selenium and magnesium are protective factors for male semen quality.
Churchill, Diane M. "The effect of zinc orthophosphate and pH/alkalinity adjustment on copper and lead levels in drinking water." Thesis, 1997. http://hdl.handle.net/2429/6340.
Full textVoruganti, Venkata Saroja Freeland-Graves Jeanne H. "Obesity-associated phenotypes and circulating levels of ghrelin, cholecystokinin, low-density lipoprotein and zinc genetic and observational studies /." 2005. http://repositories.lib.utexas.edu/bitstream/handle/2152/1750/vorugantiv45585.pdf.
Full textVoruganti, Venkata Saroja. "Obesity-associated phenotypes and circulating levels of ghrelin, cholecystokinin, low-density lipoprotein and zinc: genetic and observational studies." Thesis, 2005. http://hdl.handle.net/2152/1750.
Full textMackraj, Irene. "The effect of vitamin B-6 deficiency on the levels of tissue copper, iron and zinc in the rat." Thesis, 1989. http://hdl.handle.net/10413/9709.
Full textŽÁČKOVÁ, Klára. "Sezónní dynamika vybraných krevních parametrů u vybraných masných plemen ovcí chovaných v podhorských podmínkách." Master's thesis, 2009. http://www.nusl.cz/ntk/nusl-51260.
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